var http;
var browser = navigator.appName;
var postal_array;

if ( browser == 'Microsoft Internet Explorer' )
 http = new ActiveXObject("Microsoft.XMLHTTP");
else
 http = new XMLHttpRequest();

function loadZip(zipCode) {
	p = zipCode;
	if(zipCode.length > 0) {
		if(zipCode.length < 4) { 
			alert('Vul minstens de vier cijfers van uw postcode in')
			document.emailform.postc.focus();
			return false;
	}
      plprv.innerHTML = '<img src="http://www.automart.nl/images/progressbar.gif">';  
	http.open("GET", "/scripts/pc.pl?pc=" + zipCode, true);
      http.onreadystatechange=httpChange
      http.send(null)
	}
}

function httpChange() {
    if (http.readyState == 4) {
            var postal_array=http.responseText.split(";");
		chpc = postal_array[1];
            alldt = postal_array[1] + ', ' + postal_array[3];  
            alldt2 = postal_array[0] + ';' + postal_array[1] + ';' + postal_array[2] + ';' + postal_array[3] + ';' + postal_array[4] + ';' + postal_array[5];  

	if (chpc == 0) {
//            document.form.plaats.value = 'fout';  
            plprv.innerHTML = "<font color=red>Foutieve postcode:" + p + "</font>";
		document.emailform.postc.focus();
	}
	else {
            plprv.innerHTML = alldt;  
            document.emailform.plaats.value = alldt2;  
		document.emailform.email.focus();
	}
   }
}